ME4000 2006-2007 Department of Mechanical Engineering University of Utah, Salt Lake City UT 84112-9208 Everett Bird Blake Butler Chad Corbitt Daniel Hurst Tyler Nicholson Seth PaulME 4000 – Final Report 12/5/2006 Advisor: Dr. Dan Adams Überboard Page 2 of 42 1 Front Matter 1.1 Executive Summary Skateboarding has grown greatly in popularity in recent years. This increase in popularity has not been met with an increase in technology. While other board sports have been updated with innovative ideas, the skateboard has fundamentally remained unchanged. This project aims to engineer a more modern ride by making a board that is maneuverable, capable of stopping with ease, comfortable to ride, and adaptable. The Überboard will be a skateboard which will be able to turn and maneuver smoothly and sharply. The four wheels will be attached via four adjustable spring-loaded arms. In order to control the steering, a series of mechanisms activated by the rider’s shifting body weight will be utilized. The enhanced maneuverability will be accomplished by the use of tension cables and cams, which will lightly brake certain wheels effectively enabling the board to turn. Current skateboard designs offer unattractive and difficult means of stopping. Team Überboard is seeking a safe and simple way to control speed when traveling downhill. Braking will be achieved as the rider shifts his or her weight to the back of the board. This system will have the ability to be turned off if the rider does not want to use it. A suspension will be added to the Überboard which will enhance the rider’s comfort and safety. The system will be adjustable to fit many different riding styles and preferences. The board will also be able to adapt for off-road terrain while maintaining performance. This will be accomplished by interchangeable coil springs that lift the board to the required height. The Überboard will reflect an overdue increase in technology and will help riders of all skill levels improve their performance. Maneuverability and stopping will be achieved by using tension cables and cams, a higher degree of comfort by adding a suspension, and adaptability to many terrains via off-road kits.ME 4000 – Final Report 12/5/2006 Advisor: Dr. Dan Adams Überboard Page 3 of 42 1.2 Table of Contents 1 Front Matter..................................................................................................................2 1.1 Executive Summary....................................................................................................... 2 1.2 Table of Contents........................................................................................................... 3 1.3 List of Figures................................................................................................................ 6 1.4 List of Tables. ................................................................................................................ 6 2 Context ......................................................................................................................... 6 2.1 Need Statement .............................................................................................................. 6 2.2 Problem Statement......................................................................................................... 7 2.3 Design Team .................................................................................................................. 8 2.3.1 Student Design Team Members.............................................................................................. 8 2.3.2 Teaching Team.............................................................................................................................. 9 2.4 Team Circumstances...................................................................................................... 9 3 Design Requirements ................................................................................................. 10 Introduction................................................................................................................................ 10 3.1 Functional Requirements ............................................................................................. 10 3.1.1 Functional Requirements...................................................................................................... 10 3.1.1.1 Steering............................................................................................................................ 10 3.1.1.2 Suspension....................................................................................................................... 10 3.1.1.3 Braking ............................................................................................................................ 11 3.1.2 Constraints............................................................................................................................ 11 3.1.2.1 Steering............................................................................................................................ 11 3.1.2.2 Suspension....................................................................................................................... 11 3.1.2.3 Braking ............................................................................................................................ 11 3.1.3 Opportunities........................................................................................................................ 11 3.1.3.1 Steering............................................................................................................................ 11 3.1.3.2 Suspension....................................................................................................................... 12 3.1.3.3 Braking ............................................................................................................................ 12 3.2 Physical Requirements................................................................................................. 12 3.2.1 Physical Constraints ............................................................................................................. 12 3.2.1.1 Steering............................................................................................................................ 13 3.2.1.2